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Thread: The Little Engine That Could..... Do 60 MPH

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  1. #1
    Join Date
    Mar 2011
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    The Little Engine That Could..... Do 60 MPH

    So, here's an update on "Grandma's old 289 with junkyard parts",,, eh, not so bad.... I'm sure some people can do over 60 but it's plenty fast for me,,, For now.

    Here is some data....

    GPS verified 59-62mph with one 220lb driver.

    Approximately 5200 RPM. (No recording digital tach on board. Datalogger and EFI in the works...)

    GPS verified 53-56mph with 2 220lb passengers.

    91 octane REAL gasoline.

    I am currently running a 6 gallon marine outboard tank with a 2.5 gallon reserve and it sucks down the whole 6 gallons in less than 15 minutes at WOT. I may need to take out a loan for fuel.

    Steering is VERY responsive and is like driving a sports car. I definitely could use hydraulic steering, after 45mph or so, it likes to change the drive angle and requires some arm to keep it there.

    Throttle is crazy responsive. The 600CFM double pumper square bore was the way to go for this cam and manifold. No additional tuning required. I wish I could plug one of my WBO2's into it and get a mixture reading but the plugs are reading a perfect mixture, slightly richer than stoich.

    No knock with 36 deg @ 170F running temp.

    It's A BLAST!!!

    Here are some photos of the boat with my dad behind the wheel...

    Boats are cheap if you do all the work yourself.
    Gas.... Not so much...

  2. #2
    Join Date
    Dec 2007
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    NICE!!! Congratulations--all your hard work is paying off well. Lots of good info/data captured as well, thanks for that. -Mike
    "I don't have time to get into it, but he went through a lot." -Pulp Fiction

  3. #3
    Join Date
    Mar 2005
    Rep Power

    That is very good performance. And, when you get the boat out in some 1' chop, it will be a little faster. Calm water like that "glues" the boat to the water.

    Thanks for the sharing the video, and the data.

    What prop are you running?
    “Oh right, because you walked into strippers discount warehouse and said ‘Help me showcase my intellect.’” - Archer

    Grand Rapids, Michigan
    1985 Donzi Criterion SS
    1967 Donzi 16 Ski Sporter, C16-409, Has a new home!
    38' Carver Aft Cabin
    1968 Sea Ray SRV 180 w/1975 70 hp Evinrude
    10" RIB w/15 hp 1984 Evinrude

  4. #4
    Join Date
    Aug 2005
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    Nice, did your hat stay on?
    Lake St. Clair, Lake Huron, Lake Erie, Lake Oakland

  5. #5
    Join Date
    Feb 2011
    Rep Power
    Congratulations Adam,
    Very impressed following your build from the begining. Looks like a blast and love the seats. Dad looks as happy as you!

  6. #6
    GBond Guest
    WoW....Good job Adam!

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